大家帮我看下这个apache的配置呢？？？

我在tomcat的server.xml中配置了2个上下文/usa和/china
下面是apache文件配置
XML code

.httpd.conf文件=====
DocumentRoot "D:/tomcat-6.0.29/webapps"
<Directory />
    Options FollowSymLinks
    AllowOverride All
    Order deny,allow
    Deny from all
</Directory>
<Directory "D:/tomcat-6.0.29/webapps">
    Options Indexes FollowSymLinks
    AllowOverride All
    Order allow,deny
    Allow from all
</Directory>

mod_jk.conf文件=====
LoadModule jk_module modules/mod_jk.so
JkWorkersFile "conf.d/workers.properties"
JkLogFile "logs/mod_jk.log"
JkLogLevel info
DirectoryIndex index.html index.htm index.jsp
ErrorLog logs/shsc-error_log.txt
CustomLog logs/shsc-access_log.txt common
JkMount /*/servlet/* ajp13
JkMount /*.jsp ajp13
JkMount /*.do ajp13
Alias /usa "D:/tomcat-6.0.29/webapps/usa"
Alias /china "D:/tomcat-6.0.29/webapps/china"

.htaccess文件=====
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteCond %{QUERY_STRING} ^(.*)$
RewriteRule ^([^/]+)/[^/]+-books/xinhua/(\d+).html$ $1/online/getBook.jsp?book_id=$2&%1 [L]
</IfModule>

访问路径
http://localhost/usa/fdg32-sdfs32-book/xinhua/12345678.html?wee=sfs&charge=dssgw
结果提示出错，error.log如下
[Tue Jan 18 17:54:17 2011] [error] [client 127.0.0.1] File does not exist: D:/tomcat-6.0.29/webapps/usa/fdg32-sdfs32-book
就是说apache没有映射成功，请问问题出在哪呀？

$1/online/getBook.jsp?book_id=$2&%1中的
%1就是我的上下文路径，也就是说可能是http://localhost/usa/*****或者http://localhost/china/*****
总之我的需求就是要灵活应对tomcat的server.xml中配置的多个上下文。(不用apache的情况下，所有资源访问一切正常)